The device was not returned to olympus for evaluation.The exact cause of the reported event could not be conclusively determined at this time.The most likely cause for this type of sheath damage can be attributed to excessive pressure applied during the procedure.The instruction manual warns users: "always keep sheaths parallel to one another when assembling and disassembling.If the inner sheath is inserted or removed at an angle to the outer sheath, the lateral force applied to the inner sheath may crack, loosen, break, or otherwise damage the sheath's insulated distal tip.".
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